add osx build

Makefile.osx

@@ -0,0 +1,32 @@
+SRC = irmc.c
+OBJ = ${SRC:.c=.o}
+LDFLAGS = -L/opt/local/lib -lm -loss -lportaudio -lmorse
+CFLAGS = -Wall -I/opt/local/include 
+INSTALLDIR = ${HOME}/bin
+
+all: options irmc 
+
+options:
+	@echo irmc build options:
+	@echo "CFLAGS   = ${CFLAGS}"
+	@echo "LDFLAGS  = ${LDFLAGS}"
+	@echo "CC       = ${CC}"
+	@echo "INSTALLDIR = ${INSTALLDIR}"
+
+.c.o:
+	@echo CC $<
+	@${CC} -c ${CFLAGS} $<
+
+irmc:   ${OBJ}
+	@echo CC -o $@
+	@${CC} -o $@ ${OBJ} ${LDFLAGS}
+
+hex: 	${OBJ}
+	@echo avr-gcc -o $@
+	avr-gcc -o $@ ${OBJ} ${LDFLAGS}
+
+clean:
+	@echo cleaning
+	@rm -f irmc irmc.core ${OBJ} 
+install: irmc
+	cp irmc ${INSTALLDIR}